.page-about {
  --about-line: rgba(57,255,20,0.3);
}

/* ---------- 品牌叙事 ---------- */
.page-about .about-intro {
  position: relative;
  padding: clamp(36px, 6vw, 80px) 0;
  background:
    radial-gradient(ellipse at 85% 12%, rgba(57,255,20,0.12), transparent 55%),
    linear-gradient(180deg, var(--color-bg) 0%, var(--color-bg-deep) 100%);
}

.page-about .intro-grid {
  display: grid;
  gap: 28px;
}

.page-about .intro-copy .kicker {
  color: var(--color-accent);
}

.page-about .intro-copy h1 {
  font-family: var(--font-headline);
  font-size: clamp(44px, 9vw, 88px);
  line-height: 0.95;
  text-transform: uppercase;
  margin: 0 0 20px;
  color: var(--color-text);
}

.page-about .intro-copy .lead {
  color: var(--color-muted);
  max-width: 46em;
}

.page-about .intro-copy p:not(.lead):not(.kicker) {
  color: var(--color-muted);
  font-size: 14px;
  line-height: 1.8;
  margin: 0 0 8px;
  max-width: 46em;
}

.page-about .intro-facts {
  display: grid;
  margin-top: 24px;
}

.page-about .fact-row {
  position: relative;
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 14px 0 18px;
  border-bottom: 1px solid var(--color-line);
}

.page-about .fact-row::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  height: 2px;
  width: 38%;
  background: var(--gradient-data);
}

.page-about .fact-row:nth-child(2)::after {
  width: 66%;
}

.page-about .fact-row:nth-child(3)::after {
  width: 100%;
}

.page-about .fact-index {
  font-family: var(--font-index);
  font-size: 13px;
  color: var(--color-accent);
}

.page-about .fact-label {
  font-size: 14px;
  color: var(--color-muted);
  flex: 1;
}

.page-about .fact-row strong {
  font-family: var(--font-headline);
  font-size: 22px;
  letter-spacing: 0.02em;
  color: var(--color-text);
}

.page-about .intro-visual {
  margin: 0;
  border: 1px solid var(--color-line);
  border-radius: 6px;
  overflow: hidden;
  background: var(--color-glass);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.18);
}

.page-about .intro-visual img,
.page-about .timeline-hero img,
.page-about .honor-art img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
}

.page-about .intro-visual .caption,
.page-about .timeline-hero .caption,
.page-about .honor-art .caption {
  padding: 10px 16px;
  font-size: 13px;
}

/* ---------- 发展里程碑 ---------- */
.page-about .about-timeline {
  background: linear-gradient(180deg, var(--color-bg-deep), rgba(7,21,48,0.55));
  padding: var(--section-space) 0;
}

.page-about .section-head .kicker {
  color: var(--color-warn);
  font-family: var(--font-index);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-size: 14px;
  margin: 0 0 12px;
}

.page-about .section-head h2 {
  font-family: var(--font-headline);
  font-size: clamp(32px, 6vw, 62px);
  line-height: 1;
  color: var(--color-text);
  margin: 0 0 16px;
}

.page-about .section-head .lead {
  color: var(--color-muted);
  max-width: 52em;
  margin: 0;
}

.page-about .timeline-hero {
  margin: 32px 0 0;
  border: 1px solid var(--color-line);
  border-radius: 6px;
  overflow: hidden;
  background: var(--color-glass);
}

.page-about .timeline-rail {
  margin-top: 40px;
  position: relative;
  border-left: 1px solid var(--about-line);
  padding-left: 32px;
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.page-about .timeline-item {
  position: relative;
}

.page-about .timeline-item::before {
  content: "";
  position: absolute;
  left: -37px;
  top: 14px;
  width: 11px;
  height: 11px;
  background: var(--color-accent);
  border-radius: 50%;
  box-shadow: 0 0 0 3px rgba(57,255,20,0.18), 0 0 16px rgba(57,255,20,0.45);
}

.page-about .timeline-marker {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 10px;
}

.page-about .marker-year {
  font-family: var(--font-headline);
  font-size: 36px;
  color: var(--color-accent);
  line-height: 1;
}

.page-about .marker-phase {
  font-family: var(--font-index);
  font-size: 12px;
  letter-spacing: 0.16em;
  line-height: 1.2;
  text-transform: uppercase;
  color: var(--color-warn);
  background: rgba(255,107,0,0.12);
  border: 1px solid rgba(255,107,0,0.3);
  padding: 4px 10px;
  border-radius: 2px;
}

.page-about .marker-line {
  display: block;
  height: 1px;
  background: var(--color-line);
  flex: 1;
}

.page-about .timeline-card {
  background: var(--color-glass);
  border: 1px solid var(--color-line);
  border-left: 2px solid rgba(57,255,20,0.8);
  border-radius: 4px;
  padding: 18px 20px;
  transition: border-color 0.25s ease, background-color 0.25s ease, transform 0.2s ease;
}

@media (hover:hover) {
  .page-about .timeline-card:hover {
    background: rgba(57,255,20,0.06);
    border-color: rgba(57,255,20,0.4);
    transform: translateY(-2px);
  }
}

.page-about .timeline-card h3 {
  font-family: var(--font-headline);
  font-size: 19px;
  color: var(--color-text);
  margin: 0 0 8px;
}

.page-about .timeline-card p {
  font-size: 14px;
  line-height: 1.75;
  color: var(--color-muted);
  margin: 0;
}

/* ---------- 团队与组织 ---------- */
.page-about .about-team {
  background:
    radial-gradient(ellipse at 75% 0%, rgba(255,107,0,0.1), transparent 55%),
    var(--color-bg);
  padding: var(--section-space) 0;
}

.page-about .team-grid {
  display: grid;
  gap: 20px;
  margin-top: 36px;
}

.page-about .team-card {
  position: relative;
  background: var(--color-glass);
  border: 1px solid var(--color-line);
  border-radius: 6px;
  padding: 26px 24px 24px;
  overflow: hidden;
  box-shadow: 0 14px 30px rgba(0, 0, 0, 0.14);
}

.page-about .team-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-data);
}

.page-about .team-num {
  display: flex;
  align-items: baseline;
  gap: 10px;
  font-family: var(--font-headline);
  font-size: 54px;
  line-height: 1;
  color: var(--color-accent);
  margin-bottom: 14px;
}

.page-about .team-num span {
  font-family: var(--font-index);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--color-muted);
  text-transform: uppercase;
}

.page-about .team-card h3 {
  font-family: var(--font-headline);
  font-size: 18px;
  color: var(--color-text);
  margin: 0 0 8px;
}

.page-about .team-card p {
  color: var(--color-muted);
  font-size: 14px;
  line-height: 1.75;
  margin: 0;
}

/* ---------- 资质与荣誉 ---------- */
.page-about .about-honor {
  background:
    radial-gradient(ellipse at 15% 30%, rgba(57,255,20,0.08), transparent 50%),
    linear-gradient(180deg, rgba(7,21,48,0.7), var(--color-bg));
  padding: var(--section-space) 0;
}

.page-about .honor-flex {
  display: grid;
  gap: 28px;
  margin-top: 36px;
}

.page-about .honor-art {
  margin: 0;
  border: 1px solid var(--color-line);
  border-radius: 6px;
  overflow: hidden;
  background: var(--color-glass);
}

.page-about .honor-list {
  display: grid;
  gap: 14px;
  align-content: start;
}

.page-about .honor-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  background: var(--color-glass);
  border: 1px solid var(--color-line);
  border-radius: 6px;
  padding: 18px 20px;
}

.page-about .honor-icon {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(57,255,20,0.14);
  border: 1px solid rgba(57,255,20,0.36);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-accent);
}

.page-about .honor-icon svg {
  width: 22px;
  height: 22px;
}

.page-about .honor-item:nth-child(2) .honor-icon {
  background: rgba(255,107,0,0.12);
  border-color: rgba(255,107,0,0.34);
  color: var(--color-warn);
}

.page-about .honor-item:nth-child(3) .honor-icon {
  background: rgba(168,184,216,0.1);
  border-color: var(--color-line);
  color: var(--color-muted);
}

.page-about .honor-text h3 {
  font-family: var(--font-headline);
  font-size: 17px;
  color: var(--color-text);
  margin: 0 0 6px;
}

.page-about .honor-text p {
  font-size: 13px;
  line-height: 1.7;
  color: var(--color-muted);
  margin: 0;
}

/* ---------- 愿景与承诺 ---------- */
.page-about .about-vision {
  background:
    radial-gradient(ellipse at 80% 20%, rgba(57,255,20,0.1), transparent 55%),
    radial-gradient(ellipse at 20% 80%, rgba(255,107,0,0.1), transparent 55%),
    var(--color-bg);
  padding: var(--section-space) 0;
}

.page-about .vision-panel {
  background: var(--color-glass);
  border: 1px solid var(--color-line);
  border-radius: 10px;
  padding: clamp(28px, 5vw, 56px);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.page-about .vision-panel::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--gradient-data);
}

.page-about .vision-panel .kicker {
  color: var(--color-accent);
  font-family: var(--font-index);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-size: 14px;
  margin-bottom: 16px;
}

.page-about .vision-panel h2 {
  font-family: var(--font-headline);
  font-size: clamp(30px, 5vw, 56px);
  line-height: 1;
  color: var(--color-text);
  margin: 0 0 18px;
}

.page-about .vision-panel .vision-panel p {
  color: var(--color-muted);
  font-size: 15px;
  line-height: 1.85;
  max-width: 42em;
  margin: 0 auto 30px;
}

.page-about .vision-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px;
}

.page-about .vision-actions .button {
  margin: 0;
}

.page-about .vision-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text);
  border: 1px solid rgba(255,107,0,0.5);
  background: rgba(255,107,0,0.08);
  border-radius: 2px;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  padding: 12px 22px;
}

.page-about .vision-link--ghost {
  color: var(--color-muted);
  border-color: var(--color-line);
  background: transparent;
}

.page-about .vision-link:hover,
.page-about .vision-link:focus-visible {
  border-color: var(--color-accent);
  color: var(--color-accent);
  background: rgba(57,255,20,0.08);
  outline: none;
}

/* ---------- 桌面增强 ---------- */
@media (min-width: 900px) {
  .page-about .intro-grid {
    grid-template-columns: 1.1fr 0.9fr;
    gap: 56px;
    align-items: center;
  }

  .page-about .team-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
  }

  .page-about .honor-flex {
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
    gap: 44px;
    align-items: stretch;
  }

  .page-about .timeline-rail {
    padding-left: 48px;
  }

  .page-about .timeline-item::before {
    left: -53px;
  }

  .page-about .timeline-card {
    max-width: 780px;
  }
}

@media (min-width: 1200px) {
  .page-about .intro-copy h1 {
    font-size: 96px;
  }

  .page-about .section-head h2 {
    font-size: 64px;
  }
}